2203113209981 has 2 divisors, whose sum is σ = 2203113209982. Its totient is φ = 2203113209980.

The previous prime is 2203113209963. The next prime is 2203113210029. The reversal of 2203113209981 is 1899023113022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1157625364900 + 1045487845081 = 1075930^2 + 1022491^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203113209981 - 2¹⁰ = 2203113208957 is a prime.

It is a super-2 number, since 2×2203113209981² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2203113209911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101556604990 + 1101556604991.

It is an arithmetic number, because the mean of its divisors is an integer number (1101556604991).

Almost surely, 2^{2203113209981} is an apocalyptic number.

It is an amenable number.

2203113209981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2203113209981 is an equidigital number, since it uses as much as digits as its factorization.

2203113209981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 2203113209981 in words is "two trillion, two hundred three billion, one hundred thirteen million, two hundred nine thousand, nine hundred eighty-one".